# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://docs.scrapy.org/en/latest/topics/item-pipeline.html


# useful for handling different item types with a single interface
from itemadapter import ItemAdapter
import json


# maoyan(猫眼案例)
class MoviesPipeline:
    def open_spider(self, spider):
        self.filename = open("maoyan.txt", "w", encoding="utf-8")

    def process_item(self, item, spider):
        # 返回item为字典(dict)时
        self.filename.write(json.dumps(item, ensure_ascii=False)+'\n')
        # 返回item为Item对象时
        # self.filename.write(json.dumps(dict(item), ensure_ascii=False)+'\n')
        return item

    def close_spider(self, spider):
        self.filename.close()
